Re: [PATCH] Fix kunmap_atomic's use of kpte_clear_flush()

On Tue, 2006-11-07 at 16:22 -0800, Jeremy Fitzhardinge wrote:
> kunmap_atomic() will call kpte_clear_flush with vaddr/ptep arguments
> which don't correspond if the vaddr is just a normal lowmem address
> (ie, not in the KMAP area).  This patch makes sure that the pte is
> only cleared if kmap area was actually used for the mapping.

Or in other words, if kmap_atomic() does nothing, kunmap_atomic() should
do nothing.

Rusty.


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Follow-Ups:
- Re: [PATCH] Fix kunmap_atomic's use of kpte_clear_flush()
  - From: Jeremy Fitzhardinge <[email protected]>

References:
- [PATCH] Fix kunmap_atomic's use of kpte_clear_flush()
  - From: Jeremy Fitzhardinge <[email protected]>

Prev by Date: Re: AMD X2 unsynced TSC fix?
Next by Date: Re: [PATCH] Fix kunmap_atomic's use of kpte_clear_flush()
Previous by thread: [PATCH] Fix kunmap_atomic's use of kpte_clear_flush()
Next by thread: Re: [PATCH] Fix kunmap_atomic's use of kpte_clear_flush()
Index(es):
- Date
- Thread

[Index of Archives] [Kernel Newbies] [Netfilter] [Bugtraq] [Photo] [Stuff] [Gimp] [Yosemite News] [MIPS Linux] [ARM Linux] [Linux Security] [Linux RAID] [Video 4 Linux] [Linux for the blind] [Linux Resources]